hi i am using hbase 94.10 and hadoop 1.2.1 trying to run couple of map-reduce jobs on hbase by TableMapper, i am getting this exception
do i really need to configure DNS on local.? can someone help me with this issue. Exception in thread "main" java.lang.NullPointerException at org.apache.hadoop.net.DNS.reverseDns(DNS.java:79) at org.apache.hadoop.hbase.mapreduce.TableInputFormatBase.reverseDNS(TableInputFormatBase.java:219) at org.apache.hadoop.hbase.mapreduce.TableInputFormatBase.getSplits(TableInputFormatBase.java:184) at org.apache.hadoop.mapred.JobClient.writeNewSplits(JobClient.java:1054) at org.apache.hadoop.mapred.JobClient.writeSplits(JobClient.java:1071) at org.apache.hadoop.mapred.JobClient.access$700(JobClient.java:179) at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:983) at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:936) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:415) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1190) at org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:936) at org.apache.hadoop.mapreduce.Job.submit(Job.java:550) at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:580) at com.serendio.penton.hbase.mapping.DataScrubbingMR.main(DataScrubbingMR.java:233) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.hadoop.util.RunJar.main(RunJar.java:160) Thanks, Yeshwanth
